STEM CUTTING PROPAGATION AND SEED GERMINATION OF MIRABILIS JALAPA WITH DIFFERENT GEOGRAPHICAL POPULATIONS
To investigate the difference of the reproductive characteristics among 11 different geographical populations of Mirabilis jalapa, characteristics of seed germination and stem cutting of different populations were comparatively studied, and the relationship between them was analyzed. The results showed that, there were differences in the characteristics of the seed germination among different populations, the seed germination rate and germinative force of Jiangsu (JS) population were the highest, with the values of 77.50 and 72.00%respectively, but lowest seed germination rate (22.50%) for Fujiang (FJ) population and lowest gerninative force (3.50%) for Guangxi (GX) population. There were differences in the characteristics of stem cutting reproduction among different populations also, cutting survival rates of eight populations as Beijing (BJ) etc. were relatively high, with the values over 90%, but lowest for JS population (46.67%);the rooting number of the cutting slips for GX population was the highest (69.83 pieces), significantly higher than the others (P<0.05), the lowest for Chongqing (CQ) population (6.57 pieces);the root length of the cutting slips for GX population was the highest (2.74 cm), and the lowest for Shanghai (SH) population (1.04 cm). There was negative correlation between seed germination rates and stem cutting survival rates, without significance, which showed there perhaps was some trade-off between asexual reproduction and sexual reproduction of M. jalapa. The study not only reveals the reproductive phenotypic plasticity of M. jalapa, but also provides guiding function for specific strategies in its control.
国家科技期刊平台
NSTL
万方数据
维普
